Minnesota Vikings left tackle Bryant McKinnie did not participate in the team's opening training camp practice because he was placed on the reserve/non-football injury list.

Both McKinnie and coach Leslie Frazier had little to say about the subject, according to the Minneapolis Star Tribune. McKinnie said he had "some issues." Asked if his conditioning was an issue, McKinnie said, "My conditioning would help me get better."

Frazier said he would be able to provide more details about McKinnie's situation in the coming days. "We've got to be able to get a little more information," he said. Asked if the 6-8 McKinnie's weight is where the Vikings wanted, Frazier said the team is working on that.

McKinnie spent Monday's practice working out with right guard Anthony Herrera, who opened camp on the physically unable to perform list. Herrera tore his left ACL last season and the had surgery to repair a triceps muscle this offseason.

Meanwhile, the Vikings signed free-agent offensive lineman Charlie Johnson, who has started at both left tackle and guard for the Colts.